We discovered one or more bugs in your app when reviewed on iPhone running iOS 11.2.5 on Wi-Fi connected to an IPv6 network.

Specifically, we were unable to fetch any content properly.

Please see attached screenshots for details.

Next Steps

To resolve this issue, please run your app on a device to identify any issues, then revise and resubmit your app for review.

If we misunderstood the intended behavior of your app, please reply to this message in Resolution Center to provide information on how these features were intended to work.

For new apps, uninstall all previous versions of your app from a device, then install and follow the steps to reproduce the issue. For updates, install the new version as an update to the previous version, then follow the steps to reproduce the issue.

For a networking overview, please review About Networking. For a more specific overview of App Review’s IPv6 requirements, please review the IPv6 and App Review discussion on the Apple Developer Forum.

Guideline 2.5.4 - Performance - Software Requirements

Your app declares support for location in the UIBackgroundModes key in your Info.plist file but does not have any features that require persistent location. Apps that declare support for location in the UIBackgroundModes key in your Info.plist file must have features that require persistent location.

Next Steps

To resolve this issue, please revise your app to include features that require the persistent use of real-time location updates while the app is in the background.

If your app does not require persistent real-time location updates, please remove the "location" setting from the UIBackgroundModes key. You may wish to use the significant-change location service or the region monitoring location service if persistent real-time location updates are not required for your app features.

Your app declares support for external-accessory in the UIBackgroundModes key in your Info.plist file but does not declare any external accessory protocols supported by your app. The external accessory background mode is intended for apps that communicate with hardware accessories through the External Accessory framework.

Next Steps

If your app is meant to work with external hardware, supported protocols must be included in the UISupportedExternalAccessoryProtocols key in your app's Info.plist file - and the hardware's PPID # should be provided in the Review Notes field of your app in iTunes Connect.

Additionally, your app must be authorized by MFi to use the desired hardware. If you are not yet in the MFi Program, you can enroll at MFi program.

Please either revise your Info.plist to include the UISupportedExternalAccessoryProtocols key and update your Review Notes to include the PPID # - or remove the external-accessory value from the UIBackgroundModes key.